Polishing machine for tableware



E. M. HANRAHAN ET AL 2,425,469

POLISHING MACHINE FOR TABLEWARE Aug. 12, 1947.,

Filed Aug. 16, 1946 INVENTORS EMERY M. HANRAHAN WlLLlAM A.MERTINS ATTRNEYS Patented Aug. 12, 1947 POLISHING MACHINE FOR TABLEWARE Emery M.Hanrahan, Kenosha, and William A. Mertins, Racine, Wis.

Application August 16, 1946, Serial No. 691,006

1 Claim.

Our invention refers to cleaning and polishing machines for householdtableware, such as knives, forks, spoons, and the like.

The object of our invention is to provide a simple and effective motordriven polishing machine, whereby tableware may be quickly andefiectively polished.

The invention primarily embodies a housed electric motor, carrying adisc, jacketed with a removable burnishing or polishin cloth and inaddition thereto, a removable oval polishing unit for treatment ofconcave, oval, or curved articles; or ther shapes.

With the above and other objects in View, which will appear as thedescription proceeds, the invention resides in the novel construction,combination and arrangement of parts, substantially as hereinafterdescribed, and more particularly defined by the appended claim, it beingunderstood that such changes in the precise embodiment of the hereindisclosed invention may be made as come within the scope of the claim.

In the accompanying drawings is illustrated one complete example of thephysical embodiment of the present invention constructed according tothe best mode so far devised for the practical application of theprinciples thereof.

In the drawings:

Fig. 1 represents a sectional elevation of a polishing machine embodyingthe features of our invention, the section being indicated by line II ofFigure 2.

Fig. 2 is a plan view of the same.

Referring by characters to the drawings, I indicates a domed base havinga bottom open mouth.

The crown of the base is apertured and provided with an anti-frictionbearing 2.

The bearing has extended upwardly therethrough a shaft 3 of an electricmotor 4, having a flange bottom secured to the base mouth by a screw 4',the said motor flange serving as a closure for the dome or base bracket.

The end of the shaft 3, which projects through the bearing 2, is formedwith a threaded socket 5, and secured to said shaft end is a disc 6. Theperiphery of the disc is stepped downwardly in an offset and terminatesin a peripheral flange 6.

The fiat upper face of the disc has fitted thereto a burnishing cloth I,the outer edge of which conforms to the off-set flanged portion of thedisc and is secured thereto by a ring 8, Thus the ring forms africtional clamping member for the cloth and it is secured to the discflange by screws 8. Hence, the cloth may readily be renewed and theburnishing nature of the cloth may be varied indefinitely.

The burnishing cloth is provided with a center aperture through whichthe threaded shank 9 of an oval burnishing unit It], is fitted andsecured in the socket 5.

The current to the motor is controlled by a switch I l, and also a speedcontrol.

In the operation of the polisher or burnisher, it is obvious, as forexample, when it is desired to polish knife blades, the knife, asindicated in dotted lines, Figure l, is pressed flatly upon the clothwhereby said knife blade is properly burnished on either side.

It is understood in polishing all flat household utensils, the ovalpolishing unit may be removed whereby the entire face of the disc isclear for use.

When it is desired to polish spoons or the like,

as indicated in dotted lines, Figure 1, the bowl of the spoon willsnugly fit the oval polishing surface of the unit it), which unit forthis particular purpose is inserted into the motor shaft socket.

It is also understood that various curved surfaces of household utensilsmay be similarly treated by applying said surfaces to th oval unit. Itis also apparent that the domed housing is closed and encases the motorunit to guard the same against damage from moisture and the like.

We claim:

A polishing machine of the character described, comprising a domed openbottom base, an electric motor encased therein having a flange securedto the open bottom of the base, a motor shaft extending through theupper crowned portion of said base, the shaft being provided with athreaded socket at its ends, a disc secured to the shaft having a stepedge, terminating with a flange below the disc face, a polishing clothfitted to the face of the disc, having its edge stepped downwardly andengaging the disc flange, a ring fitted to the edge of the clothdisposed below the disc surface, means for securing the ring to saiddisc flange, and an oval polishing unit having a threaded shank inengagement with the shaft socket.

EMERY M. HANRAHAN. WILLIAM A. MERTINS.

